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Transcription and Regulation

Transcription and Regulation
Transcription factors are

promoters
TATA boxes
CATT boxes
proteins which bind to DNA and regulate transcription

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Transcription and Regulation
Upstream regions which are essential for correct transcription are called

transcription factors
start codons
enhancers
promoters

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Transcription and Regulation
The binding of lac repressor to DNA could be considered to be analogous to

mixed-type inhibition of an enzyme
competitive inhibition of an enzyme
uncompetitive inhibition of an enzyme
allosteric effects in enzyme regulation

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Transcription and Regulation
Each tRNA molecule has a cloverleaf secondary structure consisting of

three stem loops
two stem loops
four stem loops
either (a) or (b)

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Transcription and Regulation
RNA polymerase holoenzyme initiates transcription which involves

None of these
recognition of the -10 sequence and -35 sequence
recognition of the -10 sequence only
recognition of the -35 sequence only

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Transcription and Regulation
In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is

RNA polymerase I
RNA polymerase II
none of these
RNA polymerase III

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